[DRBD-user] LVM2 over DRBD strange behavior

Lars Ellenberg Lars.Ellenberg at linbit.com
Fri Feb 17 13:28:12 CET 2006

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


/ 2006-02-16 20:05:02 +0100
\ Matthias Weigel:
> # vgcreate fth /dev/drbd1
>   Volume group "fth" successfully created
> 
> # vgdisplay
> 
> # vgdisplay fth
>   Volume group "fth" doesn't exist
> 
> # lvcreate -L512M -nfailover fth
>   Volume group "fth" doesn't exist
> 
> Why does vgcreate report success, but the VG is NOT here?
> 
> This seems to be a DRBD problem. Using /dev/md7 instead of /dev/drbd1 works.
> 
> Any Idea?

run the lvm tools with -vvv
run them under strace
see whether they try at all to access the drbd.
see whether they get confused by something
after all, drbd is transparent, and so is md.
lvm tools special case md, but probably forget
to special case drbd as well.

-- 
: Lars Ellenberg                                  Tel +43-1-8178292-0  :
: LINBIT Information Technologies GmbH            Fax +43-1-8178292-82 :
: Schoenbrunner Str. 244, A-1120 Vienna/Europe   http://www.linbit.com :
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